Interlaced and progressive Camera

MSc VIBOTReal Time Image-Processing Assignment#1 By: Vanya Vabrina Valindria Sophia Bano Eng Wei Yong

Interlaced Scanning Interlace is a simple method of scanning technique that stitch two successive images read from a camera Working: divide an image into odd and even fields  expose the odd lines  refresh  alternate to expose the even lines stitches the even and odd fields to form a single full frame 1st: Odd field + 2nd: Even field = Full-size frameTwo operation-mode techniques implemented on cameras:•Frame integration: only the even or odd field is repeatedly read from the image sensor•Field integration: pairs of consecutive frame lines are read from the image sensorsimultaneously.

Progressive Scanning Cameras (Sequential or P-scan camera)Working – Scans lines one at a time from left to right then from one row to the next (top to bottom) in chronological order, creating entire frame in one pass.Properties – All information is collected in one complete frame. – Screen refresh rate is 60th of a second. – Smoother, more detailed and clear image is obtained with any blurring. – Incorporate direct digital output.Modes – Different modes are 480p,720p, 1080p. – 1080p is expensive but allow for higher resolution.

Comparisons Interlaced Camera Progressive CameraApplication: Analog camera Application: Digital camerasScanning: Alternate order Scanning: Sequential orderRequire time to produce a Transferring a frame at onceframeRefresh time: 1/30 s 1/60 sOutput: Standard televisions Computer-based systemsBlurry moving object Better moving object imagesNeed only half of the No flickerbandwidthMust be de-interlaced before it Higher vertical resolutionis scaled

Image ResultsImage results anddetails from:ProgressiveScanInterlace Scans

Interlaced and progressive Camera

by Vanya Vabrina on Jun 05, 2012

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